Atlas – Quad-Core Multimode Filter
When it comes to the sound signature of synthesizers, filters are often the defining element. Atlas takes inspiration from the silky, creamy tones of 1980s Japanese classics, bringing them into the modern era with precision engineering and expanded functionality.

At its heart are four gain-cell-based multimode VCF circuits, each carefully tuned for character and clarity. The improved design lowers noise, offers accurate resonance compensation, and introduces a daisy-chain input system for advanced techniques such as effortless parallel filtering.

Each channel offers three filter modes — 4-pole low-pass, 2-pole high-pass, and 4-pole band-pass — covering everything from smooth sweeps to complex multi-slope resonant textures. The precision resonance circuit enables clean sine wave self-oscillation, turning each core into a sine oscillator for TR-style percussion when excited with triggers or gates.

Adding to its versatility, Atlas includes a CV-controlled interpolating scanner that morphs seamlessly between filter outputs, generating evolving timbres and dynamic movement within your patches.

Key Features
• Four analog gain-cell-based multimode VCF circuits
• Three selectable modes per channel: 4p-LP, 2p-HP, 4p-BP
• Resonance compensation for consistent output levels
• Daisy-chained audio and frequency inputs for advanced routing
• Secondary CV input switchable between frequency or resonance
• CV-controlled interpolating scanner for smooth output morphing

Technical Specifications
• Size: 16HP
• Current draw: +12V 170mA / –12V 170mA / +5V 0mA
• Depth: 30mm (including power cable)
• Input impedance: 100kΩ
• Output impedance: 1kΩ
• CV input range: 10Vp-p
• Frequency range: ~20Hz to 20kHz

Atlas combines vintage soul with modern precision — a quad-core filter powerhouse built to shape, sculpt, and inspire.